SpiderScript - Huge changes to introduce bytecode support
[tpg/acess2.git] / Usermode / Libraries / libspiderscript.so_src / exec_ast.c
index d84b8f9..0c1a402 100644 (file)
 extern tSpiderFunction *gpExports_First;
 
 // === PROTOTYPES ===
-void   Object_Dereference(tSpiderValue *Object);
-void   Object_Reference(tSpiderValue *Object);
-tSpiderValue   *SpiderScript_CreateInteger(uint64_t Value);
-tSpiderValue   *SpiderScript_CreateReal(double Value);
-tSpiderValue   *SpiderScript_CreateString(int Length, const char *Data);
-tSpiderValue   *SpiderScript_CastValueTo(int Type, tSpiderValue *Source);
- int   SpiderScript_IsValueTrue(tSpiderValue *Value);
-void   SpiderScript_FreeValue(tSpiderValue *Value);
-char   *SpiderScript_DumpValue(tSpiderValue *Value);
-
+// - Node Execution
 tSpiderValue   *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node);
 tSpiderValue   *AST_ExecuteNode_BinOp(tAST_BlockState *Block, tAST_Node *Node, int Operation, tSpiderValue *Left, tSpiderValue *Right);
 tSpiderValue   *AST_ExecuteNode_UniOp(tAST_BlockState *Block, tAST_Node *Node, int Operation, tSpiderValue *Value);
-
+// - Variables
 tAST_Variable *Variable_Define(tAST_BlockState *Block, int Type, const char *Name, tSpiderValue *Value);
  int   Variable_SetValue(tAST_BlockState *Block, tAST_Node *VarNode, tSpiderValue *Value);
 tSpiderValue   *Variable_GetValue(tAST_BlockState *Block, tAST_Node *VarNode);
 void   Variable_Destroy(tAST_Variable *Variable);
-
+// - Errors
 void   AST_RuntimeMessage(tAST_Node *Node, const char *Type, const char *Format, ...);
 void   AST_RuntimeError(tAST_Node *Node, const char *Format, ...);
 
@@ -42,360 +33,6 @@ void        AST_RuntimeError(tAST_Node *Node, const char *Format, ...);
  int   giNextBlockIdent = 1;
 
 // === CODE ===
-/**
- * \brief Dereference a created object
- */
-void Object_Dereference(tSpiderValue *Object)
-{
-       if(!Object)     return ;
-       if(Object == ERRPTR)    return ;
-       Object->ReferenceCount --;
-//     printf("%p Dereferenced (%i)\n", Object, Object->ReferenceCount);
-       if( Object->ReferenceCount == 0 ) {
-               switch( (enum eSpiderScript_DataTypes) Object->Type )
-               {
-               case SS_DATATYPE_OBJECT:
-                       Object->Object->Type->Destructor( Object->Object );
-                       break;
-               case SS_DATATYPE_OPAQUE:
-                       Object->Opaque.Destroy( Object->Opaque.Data );
-                       break;
-               default:
-                       break;
-               }
-               free(Object);
-       }
-}
-
-void Object_Reference(tSpiderValue *Object)
-{
-       if(!Object)     return ;
-       Object->ReferenceCount ++;
-//     printf("%p Referenced (%i)\n", Object, Object->ReferenceCount);
-}
-
-/**
- * \brief Allocate and initialise a SpiderScript object
- */
-tSpiderObject *SpiderScript_AllocateObject(tSpiderObjectDef *Class, int ExtraBytes)
-{
-        int    size = sizeof(tSpiderObject) + Class->NAttributes * sizeof(tSpiderValue*) + ExtraBytes;
-       tSpiderObject   *ret = malloc(size);
-       
-       ret->Type = Class;
-       ret->ReferenceCount = 1;
-       ret->OpaqueData = &ret->Attributes[ Class->NAttributes ];
-       memset( ret->Attributes, 0, Class->NAttributes * sizeof(tSpiderValue*) );
-       
-       return ret;
-}
-
-/**
- * \brief Create an integer object
- */
-tSpiderValue *SpiderScript_CreateInteger(uint64_t Value)
-{
-       tSpiderValue    *ret = malloc( sizeof(tSpiderValue) );
-       ret->Type = SS_DATATYPE_INTEGER;
-       ret->ReferenceCount = 1;
-       ret->Integer = Value;
-       return ret;
-}
-
-/**
- * \brief Create an real number object
- */
-tSpiderValue *SpiderScript_CreateReal(double Value)
-{
-       tSpiderValue    *ret = malloc( sizeof(tSpiderValue) );
-       ret->Type = SS_DATATYPE_REAL;
-       ret->ReferenceCount = 1;
-       ret->Real = Value;
-       return ret;
-}
-
-/**
- * \brief Create an string object
- */
-tSpiderValue *SpiderScript_CreateString(int Length, const char *Data)
-{
-       tSpiderValue    *ret = malloc( sizeof(tSpiderValue) + Length + 1 );
-       ret->Type = SS_DATATYPE_STRING;
-       ret->ReferenceCount = 1;
-       ret->String.Length = Length;
-       if( Data )
-               memcpy(ret->String.Data, Data, Length);
-       else
-               memset(ret->String.Data, 0, Length);
-       ret->String.Data[Length] = '\0';
-       return ret;
-}
-
-/**
- * \brief Concatenate two strings
- */
-tSpiderValue *Object_StringConcat(const tSpiderValue *Str1, const tSpiderValue *Str2)
-{
-        int    newLen = 0;
-       tSpiderValue    *ret;
-       if(Str1)        newLen += Str1->String.Length;
-       if(Str2)        newLen += Str2->String.Length;
-       ret = malloc( sizeof(tSpiderValue) + newLen + 1 );
-       ret->Type = SS_DATATYPE_STRING;
-       ret->ReferenceCount = 1;
-       ret->String.Length = newLen;
-       if(Str1)
-               memcpy(ret->String.Data, Str1->String.Data, Str1->String.Length);
-       if(Str2) {
-               if(Str1)
-                       memcpy(ret->String.Data+Str1->String.Length, Str2->String.Data, Str2->String.Length);
-               else
-                       memcpy(ret->String.Data, Str2->String.Data, Str2->String.Length);
-       }
-       ret->String.Data[ newLen ] = '\0';
-       return ret;
-}
-
-/**
- * \brief Cast one object to another
- * \brief Type Destination type
- * \brief Source       Input data
- */
-tSpiderValue *SpiderScript_CastValueTo(int Type, tSpiderValue *Source)
-{
-       tSpiderValue    *ret = ERRPTR;
-        int    len = 0;
-
-       if( !Source )
-       {
-               switch(Type)
-               {
-               case SS_DATATYPE_INTEGER:       return SpiderScript_CreateInteger(0);
-               case SS_DATATYPE_REAL:  return SpiderScript_CreateReal(0);
-               case SS_DATATYPE_STRING:        return SpiderScript_CreateString(4, "null");
-               }
-               return NULL;
-       }
-       
-       // Check if anything needs to be done
-       if( Source->Type == Type ) {
-               Object_Reference(Source);
-               return Source;
-       }
-       
-       #if 0
-       {
-               printf("Casting %i ", Source->Type);
-               switch(Source->Type)
-               {
-               case SS_DATATYPE_INTEGER:       printf("0x%lx", Source->Integer);       break;
-               case SS_DATATYPE_STRING:        printf("\"%s\"", Source->String.Data);  break;
-               case SS_DATATYPE_REAL:  printf("%f", Source->Real);     break;
-               default:        break;
-               }
-               printf(" to %i\n", Type);
-       }
-       #endif
-       
-       #if 0
-       if( Source->Type == SS_DATATYPE_OBJECT )
-       {
-               const char      *name = NULL;
-               switch(Type)
-               {
-               case SS_DATATYPE_INTEGER:       name = "cast Integer";  break;
-               case SS_DATATYPE_REAL:          name = "cast Real";     break;
-               case SS_DATATYPE_STRING:        name = "cast String";   break;
-               case SS_DATATYPE_ARRAY:         name = "cast Array";    break;
-               default:
-                       AST_RuntimeError(NULL, "Invalid cast to %i from Object", Type);
-                       return ERRPTR;
-               }
-               if( fcnname )
-               {
-                       ret = Object_ExecuteMethod(Left->Object, fcnname, Right);
-                       if( ret != ERRPTR )
-                               return ret;
-                       // Fall through and try casting (which will usually fail)
-               }
-       }
-       #endif
-       
-       switch( (enum eSpiderScript_DataTypes)Type )
-       {
-       case SS_DATATYPE_UNDEF:
-       case SS_DATATYPE_ARRAY:
-       case SS_DATATYPE_OPAQUE:
-       case SS_DATATYPE_OBJECT:
-               AST_RuntimeError(NULL, "Invalid cast to %i", Type);
-               return ERRPTR;
-       
-       case SS_DATATYPE_INTEGER:
-               ret = malloc(sizeof(tSpiderValue));
-               ret->Type = SS_DATATYPE_INTEGER;
-               ret->ReferenceCount = 1;
-               switch(Source->Type)
-               {
-               case SS_DATATYPE_INTEGER:       break;  // Handled above
-               case SS_DATATYPE_STRING:        ret->Integer = atoi(Source->String.Data);       break;
-               case SS_DATATYPE_REAL:  ret->Integer = Source->Real;    break;
-               default:
-                       AST_RuntimeError(NULL, "Invalid cast from %i to Integer", Source->Type);
-                       free(ret);
-                       ret = ERRPTR;
-                       break;
-               }
-               break;
-       
-       case SS_DATATYPE_REAL:
-               ret = malloc(sizeof(tSpiderValue));
-               ret->Type = SS_DATATYPE_REAL;
-               ret->ReferenceCount = 1;
-               switch(Source->Type)
-               {
-               case SS_DATATYPE_STRING:        ret->Real = atof(Source->String.Data);  break;
-               case SS_DATATYPE_INTEGER:       ret->Real = Source->Integer;    break;
-               default:
-                       AST_RuntimeError(NULL, "Invalid cast from %i to Real", Source->Type);
-                       free(ret);
-                       ret = ERRPTR;
-                       break;
-               }
-               break;
-       
-       case SS_DATATYPE_STRING:
-               switch(Source->Type)
-               {
-               case SS_DATATYPE_INTEGER:       len = snprintf(NULL, 0, "%li", Source->Integer);        break;
-               case SS_DATATYPE_REAL:  len = snprintf(NULL, 0, "%g", Source->Real);    break;
-               default:        break;
-               }
-               ret = malloc(sizeof(tSpiderValue) + len + 1);
-               ret->Type = SS_DATATYPE_STRING;
-               ret->ReferenceCount = 1;
-               ret->String.Length = len;
-               switch(Source->Type)
-               {
-               case SS_DATATYPE_INTEGER:       sprintf(ret->String.Data, "%li", Source->Integer);      break;
-               case SS_DATATYPE_REAL:
-                       sprintf(ret->String.Data, "%g", Source->Real);  break;
-               default:
-                       AST_RuntimeError(NULL, "Invalid cast from %i to String", Source->Type);
-                       free(ret);
-                       ret = ERRPTR;
-                       break;
-               }
-               break;
-       
-       default:
-               AST_RuntimeError(NULL, "BUG - BUG REPORT: Unimplemented cast target %i", Type);
-               ret = ERRPTR;
-               break;
-       }
-       
-       return ret;
-}
-
-/**
- * \brief Condenses a value down to a boolean
- */
-int SpiderScript_IsValueTrue(tSpiderValue *Value)
-{
-       if( Value == ERRPTR )   return 0;
-       if( Value == NULL )     return 0;
-       
-       switch( (enum eSpiderScript_DataTypes)Value->Type )
-       {
-       case SS_DATATYPE_UNDEF:
-               return 0;
-       
-       case SS_DATATYPE_INTEGER:
-               return !!Value->Integer;
-       
-       case SS_DATATYPE_REAL:
-               return (-.5f < Value->Real && Value->Real < 0.5f);
-       
-       case SS_DATATYPE_STRING:
-               return Value->String.Length > 0;
-       
-       case SS_DATATYPE_OBJECT:
-               return Value->Object != NULL;
-       
-       case SS_DATATYPE_OPAQUE:
-               return Value->Opaque.Data != NULL;
-       
-       case SS_DATATYPE_ARRAY:
-               return Value->Array.Length > 0;
-       default:
-               AST_RuntimeError(NULL, "Unknown type %i in SpiderScript_IsValueTrue", Value->Type);
-               return 0;
-       }
-       return 0;
-}
-
-/**
- * \brief Free a value
- * \note Just calls Object_Dereference
- */
-void SpiderScript_FreeValue(tSpiderValue *Value)
-{
-       Object_Dereference(Value);
-}
-
-/**
- * \brief Dump a value into a string
- * \return Heap string
- */
-char *SpiderScript_DumpValue(tSpiderValue *Value)
-{
-       char    *ret;
-       if( Value == ERRPTR )
-               return strdup("ERRPTR");
-       if( Value == NULL )
-               return strdup("null");
-       
-       switch( (enum eSpiderScript_DataTypes)Value->Type )
-       {
-       case SS_DATATYPE_UNDEF: return strdup("undefined");
-       
-       case SS_DATATYPE_INTEGER:
-               ret = malloc( sizeof(Value->Integer)*2 + 3 );
-               sprintf(ret, "0x%lx", Value->Integer);
-               return ret;
-       
-       case SS_DATATYPE_REAL:
-               ret = malloc( sprintf(NULL, "%f", Value->Real) + 1 );
-               sprintf(ret, "%f", Value->Real);
-               return ret;
-       
-       case SS_DATATYPE_STRING:
-               ret = malloc( Value->String.Length + 3 );
-               ret[0] = '"';
-               strcpy(ret+1, Value->String.Data);
-               ret[Value->String.Length+1] = '"';
-               ret[Value->String.Length+2] = '\0';
-               return ret;
-       
-       case SS_DATATYPE_OBJECT:
-               ret = malloc( sprintf(NULL, "{%s *%p}", Value->Object->Type->Name, Value->Object) + 1 );
-               sprintf(ret, "{%s *%p}", Value->Object->Type->Name, Value->Object);
-               return ret;
-       
-       case SS_DATATYPE_OPAQUE:
-               ret = malloc( sprintf(NULL, "*%p", Value->Opaque.Data) + 1 );
-               sprintf(ret, "*%p", Value->Opaque.Data);
-               return ret;
-       
-       case SS_DATATYPE_ARRAY:
-               return strdup("Array");
-       
-       default:
-               AST_RuntimeError(NULL, "Unknown type %i in Object_Dump", Value->Type);
-               return NULL;
-       }
-       
-}
-
 /**
  * \brief Execute a script function
  * \param Script       Script context to execute in
@@ -450,7 +87,7 @@ tSpiderValue *SpiderScript_ExecuteFunction(tSpiderScript *Script,
                        ret = AST_ExecuteNode(&bs, astFcn->Code);
                        if(ret != ERRPTR)
                        {
-                               Object_Dereference(ret);        // Dereference output of last block statement
+                               SpiderScript_DereferenceValue(ret);     // Dereference output of last block statement
                                ret = bs.RetVal;        // Set to return value of block
                        }
                        bFound = 1;
@@ -634,7 +271,7 @@ tSpiderValue *SpiderScript_CreateObject(tSpiderScript *Script,
                        ret = AST_ExecuteNode(&bs, astFcn->Code);
                        if( ret != ERRPTR )
                        {
-                               Object_Dereference(ret);        // Dereference output of last block statement
+                               SpiderScript_DereferenceValue(ret);     // Dereference output of last block statement
                                ret = bs.RetVal;        // Set to return value of block
                        }
                        bFound = 1;
@@ -762,7 +399,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        {
                                ret = AST_ExecuteNode(&blockInfo, node);
                                if(ret == ERRPTR)       break;  // Error check
-                               if(ret != NULL) Object_Dereference(ret);        // Free unused value
+                               if(ret != NULL) SpiderScript_DereferenceValue(ret);     // Free unused value
                        }
                        // Clean up variables
                        while(blockInfo.FirstVar)
@@ -807,7 +444,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        #if 0
                        #else
                        if(varVal && varVal->ReferenceCount == 2) {
-                               Object_Dereference(varVal);
+                               SpiderScript_DereferenceValue(varVal);
 //                             printf("pre: (%s) varVal->ReferenceCount = %i\n",
 //                                     Node->Assign.Dest->Variable.Name,
 //                                     varVal->ReferenceCount);
@@ -816,12 +453,12 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        value = AST_ExecuteNode_BinOp(Block, Node, Node->Assign.Operation, varVal, ret);
                        if(value == ERRPTR)     return ERRPTR;
 
-                       if(ret) Object_Dereference(ret);
+                       if(ret) SpiderScript_DereferenceValue(ret);
                        #if 0
-                       if(varVal)      Object_Dereference(varVal);
+                       if(varVal)      SpiderScript_DereferenceValue(varVal);
                        #else
                        if(varVal && varVal->ReferenceCount == 1) {
-                               Object_Reference(varVal);
+                               SpiderScript_ReferenceValue(varVal);
 //                             printf("post: varVal->ReferenceCount = %i\n", varVal->ReferenceCount);
                                break;  // If varVal was non-null, it has been updated by _BinOp
                        }
@@ -832,7 +469,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                
                // Set the variable value
                if( Variable_SetValue( Block, Node->Assign.Dest, ret ) ) {
-                       Object_Dereference( ret );
+                       SpiderScript_DereferenceValue( ret );
                        return ERRPTR;
                }
                break;
@@ -867,10 +504,10 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        ret = varVal;
                
                        if( Variable_SetValue( Block, Node->UniOp.Value, value ) ) {
-                               Object_Dereference( ret );
+                               SpiderScript_DereferenceValue( ret );
                                return ERRPTR;
                        }
-                       Object_Dereference( value );
+                       SpiderScript_DereferenceValue( value );
                }
                break;
        
@@ -887,7 +524,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        {
                                params[i] = AST_ExecuteNode(Block, node);
                                if( params[i] == ERRPTR ) {
-                                       while(i--)      Object_Dereference(params[i]);
+                                       while(i--)      SpiderScript_DereferenceValue(params[i]);
                                        ret = ERRPTR;
                                        goto _return;
                                }
@@ -911,7 +548,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                                if( !obj || obj == ERRPTR || obj->Type != SS_DATATYPE_OBJECT ) {
                                        AST_RuntimeError(Node->FunctionCall.Object,
                                                "Type Mismatch - Required SS_DATATYPE_OBJECT for method call");
-                                       while(i--)      Object_Dereference(params[i]);
+                                       while(i--)      SpiderScript_DereferenceValue(params[i]);
                                        ret = ERRPTR;
                                        break;
                                }
@@ -919,7 +556,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                                        obj->Object, Node->FunctionCall.Name,
                                        Node->FunctionCall.NumArgs, params
                                        );
-                               Object_Dereference(obj);
+                               SpiderScript_DereferenceValue(obj);
                        }
                        else
                        {
@@ -931,7 +568,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
 
                        
                        // Dereference parameters
-                       while(i--)      Object_Dereference(params[i]);
+                       while(i--)      SpiderScript_DereferenceValue(params[i]);
                        
                        // falls out
                }
@@ -947,9 +584,9 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                else {
                        tmpobj = AST_ExecuteNode(Block, Node->If.False);
                }
-               Object_Dereference(ret);
+               SpiderScript_DereferenceValue(ret);
                if( tmpobj == ERRPTR )  return ERRPTR;
-               Object_Dereference(tmpobj);
+               SpiderScript_DereferenceValue(tmpobj);
                ret = NULL;
                break;
        
@@ -962,12 +599,12 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                // Check initial condition
                if( !Node->For.bCheckAfter )
                {
-                       Object_Dereference(ret);
+                       SpiderScript_DereferenceValue(ret);
                
                        ret = AST_ExecuteNode(Block, Node->For.Condition);
                        if(ret == ERRPTR)       return ERRPTR;
                        if(!SpiderScript_IsValueTrue(ret)) {
-                               Object_Dereference(ret);
+                               SpiderScript_DereferenceValue(ret);
                                ret = NULL;
                                break;
                        }
@@ -976,12 +613,12 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                // Perform loop
                for( ;; )
                {
-                       Object_Dereference(ret);
+                       SpiderScript_DereferenceValue(ret);
                        
                        // Code
                        ret = AST_ExecuteNode(Block, Node->For.Code);
                        if(ret == ERRPTR)       return ERRPTR;
-                       Object_Dereference(ret);
+                       SpiderScript_DereferenceValue(ret);
                        
                        if(Block->BreakTarget)
                        {
@@ -1002,14 +639,14 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        // Increment
                        ret = AST_ExecuteNode(Block, Node->For.Increment);
                        if(ret == ERRPTR)       return ERRPTR;
-                       Object_Dereference(ret);
+                       SpiderScript_DereferenceValue(ret);
                        
                        // Check condition
                        ret = AST_ExecuteNode(Block, Node->For.Condition);
                        if(ret == ERRPTR)       return ERRPTR;
                        if(!SpiderScript_IsValueTrue(ret))      break;
                }
-               Object_Dereference(ret);
+               SpiderScript_DereferenceValue(ret);
                ret = NULL;
                break;
        
@@ -1036,10 +673,11 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                else {
                        tmpobj = NULL;
                }
+               // TODO: Handle arrays
                ret = NULL;
                if( Variable_Define(Block, Node->DefVar.DataType, Node->DefVar.Name, tmpobj) == ERRPTR )
                        ret = ERRPTR;
-               Object_Dereference(tmpobj);
+               SpiderScript_DereferenceValue(tmpobj);
                break;
        
        // Scope
@@ -1097,7 +735,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        if( strcmp(Node->Scope.Name, tmpobj->Object->Type->AttributeDefs[i].Name) == 0 )
                        {
                                ret = tmpobj->Object->Attributes[i];
-                               Object_Reference(ret);
+                               SpiderScript_ReferenceValue(ret);
                                break;
                        }
                }
@@ -1115,7 +753,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                tmpobj = AST_ExecuteNode(Block, Node->Cast.Value);
                if(tmpobj == ERRPTR) return ERRPTR;
                ret = SpiderScript_CastValueTo( Node->Cast.DataType, tmpobj );
-               Object_Dereference(tmpobj);
+               SpiderScript_DereferenceValue(tmpobj);
                }
                break;
 
@@ -1125,7 +763,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                if(op1 == ERRPTR)       return ERRPTR;
                op2 = AST_ExecuteNode(Block, Node->BinOp.Right);        // Offset
                if(op2 == ERRPTR) {
-                       Object_Dereference(op1);
+                       SpiderScript_DereferenceValue(op1);
                        return ERRPTR;
                }
                
@@ -1146,7 +784,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                if( !op2 || op2->Type != SS_DATATYPE_INTEGER )
                {
                        tmpobj = SpiderScript_CastValueTo(SS_DATATYPE_INTEGER, op2);
-                       Object_Dereference(op2);
+                       SpiderScript_DereferenceValue(op2);
                        op2 = tmpobj;
                }
                
@@ -1158,15 +796,15 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                }
                
                ret = op1->Array.Items[ op2->Integer ];
-               Object_Reference(ret);
+               SpiderScript_ReferenceValue(ret);
                
-               Object_Dereference(op1);
-               Object_Dereference(op2);
+               SpiderScript_DereferenceValue(op1);
+               SpiderScript_DereferenceValue(op2);
                break;
 
        // TODO: Implement runtime constants
        case NODETYPE_CONSTANT:
-               // TODO: Scan namespace for function
+               // TODO: Scan namespace for constant name
                AST_RuntimeError(Node, "TODO - Runtime Constants");
                ret = ERRPTR;
                break;
@@ -1176,7 +814,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
        case NODETYPE_INTEGER:
        case NODETYPE_REAL:
                ret = &Node->Constant;
-               Object_Reference(ret);
+               SpiderScript_ReferenceValue(ret);
                break;
        
        // --- Operations ---
@@ -1185,7 +823,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                op1 = AST_ExecuteNode(Block, Node->UniOp.Value);
                if(op1 == ERRPTR)       return ERRPTR;
                ret = SpiderScript_CreateInteger( !SpiderScript_IsValueTrue(op1) );
-               Object_Dereference(op1);
+               SpiderScript_DereferenceValue(op1);
                break;
        case NODETYPE_LOGICALAND:       // Logical AND (&&)
        case NODETYPE_LOGICALOR:        // Logical OR (||)
@@ -1194,7 +832,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                if(op1 == ERRPTR)       return ERRPTR;
                op2 = AST_ExecuteNode(Block, Node->BinOp.Right);
                if(op2 == ERRPTR) {
-                       Object_Dereference(op1);
+                       SpiderScript_DereferenceValue(op1);
                        return ERRPTR;
                }
                
@@ -1213,8 +851,8 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                }
                
                // Free intermediate objects
-               Object_Dereference(op1);
-               Object_Dereference(op2);
+               SpiderScript_DereferenceValue(op1);
+               SpiderScript_DereferenceValue(op2);
                break;
        
        // Comparisons
@@ -1227,15 +865,15 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                if(op1 == ERRPTR)       return ERRPTR;
                op2 = AST_ExecuteNode(Block, Node->BinOp.Right);
                if(op2 == ERRPTR) {
-                       Object_Dereference(op1);
+                       SpiderScript_DereferenceValue(op1);
                        ret = ERRPTR;
                        break;
                }
                
                if( !op1 || !op2 ) {
                        AST_RuntimeError(Node, "NULL Comparison (%p and %p)", op1, op2);
-                       if(op1) Object_Dereference(op1);
-                       if(op2) Object_Dereference(op2);
+                       if(op1) SpiderScript_DereferenceValue(op1);
+                       if(op2) SpiderScript_DereferenceValue(op2);
                        ret = SpiderScript_CreateInteger( !op1 && !op2 );
                        break;
                }
@@ -1247,9 +885,9 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                        {
                                tmpobj = op2;
                                op2 = SpiderScript_CastValueTo(op1->Type, op2);
-                               Object_Dereference(tmpobj);
+                               SpiderScript_DereferenceValue(tmpobj);
                                if(op2 == ERRPTR) {
-                                       Object_Dereference(op1);
+                                       SpiderScript_DereferenceValue(op1);
                                        return ERRPTR;
                                }
                        }
@@ -1302,8 +940,8 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                }
                
                // Free intermediate objects
-               Object_Dereference(op1);
-               Object_Dereference(op2);
+               SpiderScript_DereferenceValue(op1);
+               SpiderScript_DereferenceValue(op2);
                
                // Error check
                if( ret == ERRPTR )
@@ -1330,7 +968,7 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                op1 = AST_ExecuteNode(Block, Node->UniOp.Value);
                if(op1 == ERRPTR)       return ERRPTR;
                ret = AST_ExecuteNode_UniOp(Block, Node, Node->Type, op1);
-               Object_Dereference(op1);
+               SpiderScript_DereferenceValue(op1);
                break;
        
        // General Binary Operations
@@ -1350,15 +988,15 @@ tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node)
                if(op1 == ERRPTR)       return ERRPTR;
                op2 = AST_ExecuteNode(Block, Node->BinOp.Right);
                if(op2 == ERRPTR) {
-                       Object_Dereference(op1);
+                       SpiderScript_DereferenceValue(op1);
                        return ERRPTR;
                }
                
                ret = AST_ExecuteNode_BinOp(Block, Node, Node->Type, op1, op2);
                
                // Free intermediate objects
-               Object_Dereference(op1);
-               Object_Dereference(op2);
+               SpiderScript_DereferenceValue(op1);
+               SpiderScript_DereferenceValue(op2);
                break;
        
        //default:
@@ -1402,7 +1040,6 @@ tSpiderValue *AST_ExecuteNode_UniOp(tAST_BlockState *Block, tAST_Node *Node, int
                        ret = Object_ExecuteMethod(Value->Object, fcnname, );
                        if( ret != ERRPTR )
                                return ret;
-                       // Fall through and try casting (which will usually fail)
                }
        }
        #endif
@@ -1411,7 +1048,7 @@ tSpiderValue *AST_ExecuteNode_UniOp(tAST_BlockState *Block, tAST_Node *Node, int
        // Integer Operations
        case SS_DATATYPE_INTEGER:
                if( Value->ReferenceCount == 1 )
-                       Object_Reference(ret = Value);
+                       SpiderScript_ReferenceValue(ret = Value);
                else
                        ret = SpiderScript_CreateInteger(0);
                switch(Operation)
@@ -1420,7 +1057,7 @@ tSpiderValue *AST_ExecuteNode_UniOp(tAST_BlockState *Block, tAST_Node *Node, int
                case NODETYPE_BWNOT:    ret->Integer = ~Value->Integer; break;
                default:
                        AST_RuntimeError(Node, "SpiderScript internal error: Exec,UniOP,Integer unknown op %i", Operation);
-                       Object_Dereference(ret);
+                       SpiderScript_DereferenceValue(ret);
                        ret = ERRPTR;
                        break;
                }
@@ -1514,11 +1151,15 @@ tSpiderValue *AST_ExecuteNode_BinOp(tAST_BlockState *Block, tAST_Node *Node, int
                switch(Operation)
                {
                case NODETYPE_ADD:      // Concatenate
-                       ret = Object_StringConcat(Left, Right);
+                       ret = SpiderScript_StringConcat(Left, Right);
                        break;
                // TODO: Support python style 'i = %i' % i ?
                // Might do it via a function call
+               // Implement it via % with an array, but getting past the cast will be fun
 //             case NODETYPE_MODULUS:
+//                     break;
+               // TODO: Support string repititions
+//             case NODETYPE_MULTIPLY:
 //                     break;
 
                default:
@@ -1530,7 +1171,7 @@ tSpiderValue *AST_ExecuteNode_BinOp(tAST_BlockState *Block, tAST_Node *Node, int
        // Integer Operations
        case SS_DATATYPE_INTEGER:
                if( Left->ReferenceCount == 1 )
-                       Object_Reference(ret = Left);
+                       SpiderScript_ReferenceValue(ret = Left);
                else
                        ret = SpiderScript_CreateInteger(0);
                switch(Operation)
@@ -1550,7 +1191,7 @@ tSpiderValue *AST_ExecuteNode_BinOp(tAST_BlockState *Block, tAST_Node *Node, int
                        break;
                default:
                        AST_RuntimeError(Node, "SpiderScript internal error: Exec,BinOP,Integer unknown op %i", Operation);
-                       Object_Dereference(ret);
+                       SpiderScript_DereferenceValue(ret);
                        ret = ERRPTR;
                        break;
                }
@@ -1559,7 +1200,7 @@ tSpiderValue *AST_ExecuteNode_BinOp(tAST_BlockState *Block, tAST_Node *Node, int
        // Real Numbers
        case SS_DATATYPE_REAL:
                if( Left->ReferenceCount == 1 )
-                       Object_Reference(ret = Left);
+                       SpiderScript_ReferenceValue(ret = Left);
                else
                        ret = SpiderScript_CreateReal(0);
                switch(Operation)
@@ -1570,7 +1211,7 @@ tSpiderValue *AST_ExecuteNode_BinOp(tAST_BlockState *Block, tAST_Node *Node, int
                case NODETYPE_DIVIDE:   ret->Real = Left->Real / Right->Real;   break;
                default:
                        AST_RuntimeError(Node, "SpiderScript internal error: Exec,BinOP,Real unknown op %i", Operation);
-                       Object_Dereference(ret);
+                       SpiderScript_DereferenceValue(ret);
                        ret = ERRPTR;
                        break;
                }
@@ -1610,7 +1251,7 @@ tAST_Variable *Variable_Define(tAST_BlockState *Block, int Type, const char *Nam
        var->Next = NULL;
        var->Type = Type;
        var->Object = Value;
-       if(Value)       Object_Reference(Value);
+       if(Value)       SpiderScript_ReferenceValue(Value);
        strcpy(var->Name, Name);
        
        if(prev)        prev->Next = var;
@@ -1695,8 +1336,8 @@ int Variable_SetValue(tAST_BlockState *Block, tAST_Node *VarNode, tSpiderValue *
        }
 
 //     printf("Assign %p to '%s'\n", Value, var->Name);
-       Object_Reference(Value);
-       Object_Dereference(var->Object);
+       SpiderScript_ReferenceValue(Value);
+       SpiderScript_DereferenceValue(var->Object);
        var->Object = Value;
        return 0;
 }
@@ -1710,7 +1351,7 @@ tSpiderValue *Variable_GetValue(tAST_BlockState *Block, tAST_Node *VarNode)
        
        if( !var )      return ERRPTR;
        
-       Object_Reference(var->Object);
+       SpiderScript_ReferenceValue(var->Object);
        return var->Object;
 }
 
@@ -1720,7 +1361,7 @@ tSpiderValue *Variable_GetValue(tAST_BlockState *Block, tAST_Node *VarNode)
 void Variable_Destroy(tAST_Variable *Variable)
 {
 //     printf("Variable_Destroy: (%p'%s')\n", Variable, Variable->Name);
-       Object_Dereference(Variable->Object);
+       SpiderScript_DereferenceValue(Variable->Object);
        free(Variable);
 }
 

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